Patents by Inventor Jurgen Michels
Jurgen Michels has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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High-concentration active doping in semiconductors and semiconductor devices produced by such doping
Patent number: 9692209Abstract: In a method of forming a photonic device, a first silicon electrode is formed, and then a germanium active layer is formed on the first silicon electrode while including n-type dopant atoms in the germanium layer, during formation of the layer, to produce a background electrical dopant concentration that is greater than an intrinsic dopant concentration of germanium. A second silicon electrode is then formed on a surface of the germanium active layer. The formed germanium active layer is doped with additional dopant for supporting an electrically-pumped guided mode as a laser gain medium with an electrically-activated n-type electrical dopant concentration that is greater than the background dopant concentration to overcome electrical losses of the photonic device.Type: GrantFiled: March 1, 2012Date of Patent: June 27, 2017Assignee: Massachusetts Institute of TechnologyInventors: Jonathan T. Bessette, Yan Cai, Rodolfo E. Camacho-Aguilera, Jifeng Liu, Lionel Kimerling, Jurgen Michel -
Publication number: 20160327737Abstract: A method (100) of forming an integrated circuit is disclosed. The method comprises: (i) forming at least a pair of optoelectronic devices from at least a first wafer material arranged on a semiconductor substrate, the first wafer material different to silicon; (ii) etching the first wafer material to form a first recess to be filled with a second material; (iii) processing (104) the second material to form a waveguide for coupling the pair of optoelectronic devices to define an optical interconnect; and (iv) bonding (106) at least one partially processed CMOS device layer having at least one transistor to the second semiconductor substrate to form the integrated circuit, the partially processed CMOS device layer arranged adjacent to the optical interconnect. An integrated circuit is also disclosed.Type: ApplicationFiled: January 14, 2015Publication date: November 10, 2016Applicants: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, National University of Singapore, Nanyang Technological UniversityInventors: Wenjia Zhang, Bing Wang, Li Zhang, Zhaomin Zhu, Jurgen Michel, Soo-Jin Chua, Li-Shiuan Peh, Siau Ben Chiah, Eng Kian Kenneth Lee
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Patent number: 9346259Abstract: A method for closed-loop or open-loop control of ink feed in lithographic offset printing presses having at least one inking unit, a control unit and an operating element for adjusting the ink feed across a predetermined ink feed control range, includes subdividing the predetermined control range into partial ranges in the control unit. At least one adjustment parameter of the inking unit or the printing press is assigned to each partial range in the control unit. The control unit determines the appropriate partial range as a function of the ink feed selected with the operating element and adjusts the selected ink feed in the inking unit with associated adjustment parameters in the inking unit and/or in the printing press.Type: GrantFiled: February 8, 2011Date of Patent: May 24, 2016Assignee: Heidelberger Druckmaschinen AGInventors: Jürgen Michels, Dieter Schaffrath, Wolfgang Schönberger
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Publication number: 20160024687Abstract: There is provided a substrate with a lower growth confinement layer disposed thereon. An upper growth confinement layer is disposed above and vertically separated from the lower growth confinement layer. A planar lateral growth channel is provided between the upper and lower growth confinement layers with a vertical separation between the layers along the lateral growth channel. A germanium material growth seed of amorphous silicon is disposed at a site adjacent to the lateral growth channel. The upper growth confinement layer and the lower growth confinement layer each prohibits crystalline germanium material nucleation on the upper and lower growth confinement layers during exposure to GeH4 gas, for crystalline germanium material growth initiation in the lateral growth channel only at the growth seed site. Crystalline germanium material fills the lateral growth channel. A growth channel outlet provides formed crystalline germanium material from the lateral growth channel.Type: ApplicationFiled: October 7, 2015Publication date: January 28, 2016Applicant: Massachusetts Institute of TechnologyInventors: Kevin Andrew McComber, Jifeng Liu, Jurgen Michel, Lionel C. Kimerling
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Patent number: 9226291Abstract: A method includes determining at least one first station and at least one second station have a relative timing difference. The method then determines a muting schedule for the at least one first station for a plurality of sub-frames, wherein the muting schedule includes at least two adjacent muted sub-frames. The method further includes initiating sending an indication of the muting schedule to the at least one first station and the at least one second station wherein information on one or more channels is transmitted from the at least one second station during the at least two adjacent muted sub-frames.Type: GrantFiled: October 11, 2010Date of Patent: December 29, 2015Assignee: Nokia Solutions and Networks OyInventor: Jurgen Michel
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Publication number: 20150323819Abstract: Electro-optic modulators are disclosed. An electro-optic modulator includes an optical ring resonator, an optical waveguide, and a cavity of electro-optic material. The waveguide has a first portion positioned adjacent the resonator to create a first coupling region and a second portion positioned adjacent the resonator to create a second coupling region. The cavity of electro-optic material is embedded within the waveguide between the first portion and the second portion. A method of optical modulation includes the steps of receiving light into an optical waveguide, coupling a portion of the light from the waveguide into an optical ring resonator at a first coupling region between the waveguide and the resonator, transmitting the light remaining in the waveguide into a cavity of electro-optic material embedded within the waveguide, and transmitting the light from the cavity to a second coupling region between the waveguide and the resonator.Type: ApplicationFiled: March 6, 2014Publication date: November 12, 2015Applicant: UNIVERSITY OF DELAWAREInventors: Juejun Hu, Hongtao Lin, Okechukwu Ogbuu, Jifeng Liu, Lin Zhang, Jurgen Michel
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Patent number: 9110221Abstract: In a photonic waveguide, there is provided an undercladding layer and a waveguide core, having a cross-sectional height and width, that is disposed on the undercladding layer. The waveguide core comprises a waveguide core material having a thermo-optic coefficient. A refractive index tuning cladding layer is disposed on top of the waveguide core. The refractive index tuning cladding layer comprises a refractive index tuning cladding material having an adjustable refractive index and an absorption length at a refractive index tuning radiation wavelength. A thermo-optic coefficient compensation cladding layer is disposed on top of the refractive index tuning cladding layer. The thermo-optic coefficient compensation cladding layer comprises a thermo-optic coefficient compensation material having a thermo-optic coefficient that is of opposite sign to the thermo-optic coefficient of the waveguide core material.Type: GrantFiled: February 8, 2013Date of Patent: August 18, 2015Assignee: Massachusetts Institute of TechnologyInventors: Anuradha M. Agarwal, Antonio Canciamilla, Francesco Morichetti, Stefano Grillanda, Lionel C. Kimerling, Andrea Melloni, Jurgen Michel, Vivek Raghunathan, Vivek Singh
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Patent number: 9076921Abstract: A method of fabricating a large area photodiode is provided. The method includes providing a substrate having a first contact layer formed thereon. Also, the method includes forming a dielectric layer on the first contact layer and patterning selective areas of the dielectric layer to form a plurality of dielectric windows. Each of the dielectric windows has an open region exposing the first contact layer. Furthermore, the method includes epitaxially growing photodiode material(s) in the dielectric windows, wherein each of the dielectric windows are individualized photodiode structures.Type: GrantFiled: July 20, 2009Date of Patent: July 7, 2015Assignee: Massachusetts Institute of TechnologyInventor: Jurgen Michel
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Patent number: 8977281Abstract: In a method for communication by radio afrequency band that is subdivided into a plurality of subbands is used. Subbands are occupied by radio stations for sending signals. Before sending a signal, a radio station carries out a filtering operation by using a filter function and sends the signal on at least one subband. A parameter of the filter function depends on the occupation of at least one subband adjacent to the at least one subband.Type: GrantFiled: July 11, 2007Date of Patent: March 10, 2015Assignee: Siemens AktiengesellschaftInventors: Jürgen Michel, Bernhard Raaf
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Patent number: 8975460Abstract: A process is proposed for preparing acetylene by the Sachsse-Bartholomé process by combustion of a natural gas/oxygen mixture in one or more burners to obtain a cracking gas which is cooled in two or more stages in burner columns, each burner having one or more burner columns assigned thereto, and said cracking gas being quenched with pyrolysis oil in the first cooling stage, to obtain a low boiler fraction comprising benzene, toluene and xylene from the one or more burner columns, which is cooled with direct cooling water and separated in a phase separator into an aqueous phase and an organic phase which comprises benzene, toluene and xylene and is fully or partly introduced to the top of the one or more burner columns as a return stream, wherein the organic phase comprising benzene, toluene and xylene from the phase separator, prior to full or partial recycling to the top of the one or more burner columns, is supplied to a selective hydrogenation over a catalyst which comprises at least one platinum group mType: GrantFiled: July 15, 2011Date of Patent: March 10, 2015Assignee: BASF SEInventors: Lucia Königsmann, Maximilian Vicari, Thomas Heidemann, Dirk Groβschmidt, Jürgen Michel
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Patent number: 8903323Abstract: It is disclosed a method including creating inquiry information related to an evaluation of at least one network terminal, and transmitting the created inquiry information in a long-range reference signal; a method including receiving the inquiry information in the long-range signal, establishing, based on the received inquiry information, report information related to a quality of the long-range reference signal, and transmitting the established report information; and a method including receiving the report information, and evaluating, based on the received report information, at least one network terminal.Type: GrantFiled: April 14, 2009Date of Patent: December 2, 2014Assignee: Nokia Siemens Networks OyInventors: Martin Döttling, Michael Färber, Andreas Lobinger, Jürgen Michel, Bernhard Raaf, Ingo Viering
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High-Concentration Active Doping in Semiconductors and Semiconductor Devices Produced by Such Doping
Publication number: 20140254620Abstract: In a method of forming a photonic device, a first silicon electrode is formed, and then a germanium active layer is formed on the first silicon electrode while including n-type dopant atoms in the germanium layer, during formation of the layer, to produce a background electrical dopant concentration that is greater than an intrinsic dopant concentration of germanium. A second silicon electrode is then formed on a surface of the germanium active layer. The formed germanium active layer is doped with additional dopant for supporting an electrically-pumped guided mode as a laser gain medium with an electrically-activated n-type electrical dopant concentration that is greater than the background dopant concentration to overcome electrical losses of the photonic device.Type: ApplicationFiled: March 1, 2012Publication date: September 11, 2014Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Jonathan T. Bessette, Yan Cai, Rodolfo E. Camacho-Aguilera, Jifeng Liu, Lionel Kimerling, Jurgen Michel -
Patent number: 8787843Abstract: A mobile apparatus transmits a message for waking up an apparatus of a communications network in order to achieve access to the communications network. An apparatus of the communications network receives the message, determines whether the apparatus is in a standby mode in which the transmitter is deactivated, and shifts to a wake up mode, in which the transmitter is kept deactivated, for at most an apparatus-specific offset time in response to receipt of the message in case the apparatus is in the standby mode.Type: GrantFiled: June 26, 2009Date of Patent: July 22, 2014Assignee: Nokia Siemens Networks OyInventors: Martin Döttling, Jürgen Michel
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Publication number: 20140051446Abstract: There is provided amongst others an embodiment according to which an eNB detects a predetermined condition that allows for an energy saving procedure to be applied, wherein the energy saving procedure includes switching off at least one cell of a first radio access technology, performs a first handover of at least one user terminal from the first radio access technology to a second radio access technology, temporarily switches off the at least one cell of the first radio access technology after the first handover is completed, and allocates resources of the first radio access technology to at least one of the at least one user terminal which is handed back from the second radio access technology to the first radio access technology in a second handover, wherein radio access coverage for the first radio access technology is provided by the at least one cell which has not been switched off.Type: ApplicationFiled: May 12, 2011Publication date: February 20, 2014Applicant: NOKIA SIEMENS NETWORKS OYInventors: Dirk Rose, Jurgen Michel
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Patent number: 8645786Abstract: A decoding method for decoding information content in at least one data packet, which is transmitted from a sender to a receiver via a data link. The information is represented by a bit sequence, which is transformed into a transmittable redundancy version. The information is initially transmitted for a first time in a first data packet from the sender to the receiver. The information is represented by a first redundancy version, which is self-decodable. An incorrect receipt is confirmed by sending a confirmation from the receiver to the sender. The information is retransmitted at least a second time in a second data packet from the sender to the receiver upon receipt of the confirmation, wherein, for representation of the information, a second redundancy version is used, the selection of which is performed in dependence on a coding parameter, describing whether the redundancy version is self-decodable or not.Type: GrantFiled: September 15, 2005Date of Patent: February 4, 2014Assignee: Nokia Siemens Networks GmbH & Co. KGInventors: Jürgen Michel, Bernhard Raaf
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Patent number: 8619358Abstract: An optical amplifier on a silicon platform includes a first doped device layer and a second doped device layer. A gain medium is positioned between the first and second doped device layers. The gain medium comprises extrinsic gain materials so as to substantially confine in the gain medium a light signal and allow the optical amplifier to be electrically or optically pumped.Type: GrantFiled: November 3, 2009Date of Patent: December 31, 2013Assignees: Massachusetts Institute of Technology, California Institute of Technology, The Board of Trustees of the Leland Stanford Junior University, University of Rochester, Cornell UniversityInventors: Lionel C. Kimerling, Harry Atwater, Mark L. Brongersma, Luca Dal Negro, Thomas L Koch, Philippe Fauchet, Michal Lipson, Jurgen Michel, Carlos Angulo Barrios
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Patent number: 8588089Abstract: A mechanism for controlling resources and/or settings of an access network element like a base station is provided which allows an autonomous reconfiguration of, for example, the antenna configuration based on a set of performance indicators in a base station. The base station can reconfigure itself without the need of operator control so that during periods with low capacity demands the base station will reconfigure correspondingly, which may include a reduction of active cells by turning off the power for a part of the installed equipment.Type: GrantFiled: March 18, 2009Date of Patent: November 19, 2013Assignee: Nokia Siemens Networks OyInventors: Martin Döttling, Michael Färber, Andreas Lobinger, Jürgen Michel, Bernhard Raaf, Ingo Viering
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Patent number: 8567316Abstract: In a method for controlling the temperature of a press which has an applicator roller and a screen roller, the screen roller has its temperature controlled at different temperatures and the applicator roller has its temperature controlled at a constant temperature. In this manner, the choice of the screen roller temperatures can be set individually for each printing unit depending on the optical ink density values which the operator desires.Type: GrantFiled: September 25, 2006Date of Patent: October 29, 2013Assignee: Heidelberger Druckmashinen AktiengesellschaftInventors: Jens Hieronymus, Jürgen Michels, Dieter Schaffrath, Wolfgang Schönberger, Bernhard Schwaab, Michael Thielemann
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Patent number: 8542664Abstract: A code sequence is described by a line of a code matrix, the latter being obtained by formation of a Hadamard matrix with a length n and multiplication of lines of the Hadamard matrix by ?1.Type: GrantFiled: February 6, 2006Date of Patent: September 24, 2013Assignee: Siemens AktiengesellschaftInventors: Jürgen Michel, Bernhard Raaf
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Publication number: 20130243383Abstract: In a photonic waveguide, there is provided an undercladding layer and a waveguide core, having a cross-sectional height and width, that is disposed on the undercladding layer. The waveguide core comprises a waveguide core material having a thermo-optic coefficient. A refractive index tuning cladding layer is disposed on top of the waveguide core. The refractive index tuning cladding layer comprises a refractive index tuning cladding material having an adjustable refractive index and an absorption length at a refractive index tuning radiation wavelength. A thermo-optic coefficient compensation cladding layer is disposed on top of the refractive index tuning cladding layer. The thermo-optic coefficient compensation cladding layer comprises a thermo-optic coefficient compensation material having a thermo-optic coefficient that is of opposite sign to the thermo-optic coefficient of the waveguide core material.Type: ApplicationFiled: February 8, 2013Publication date: September 19, 2013Applicants: POLITECNICO DI MILANO, MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Anuradha M. Agarwal, Antonio Canciamilla, Francesco Morichetti, Stefano Grillanda, Lionel C. Kimerling, Andrea Melloni, Jurgen Michel, Vivek Raghunathan, Vivek Singh